Sen. Elizabeth Warren, D-Mass., introduced a bill to create a permanent law enforcement unit to investigate criminal activity at large banks, just as the Senate was close to passing a regulatory relief package.

Former top commercial mortgage-backed securities strategist Trevor Murray accused the Swiss lender of illegally firing him in 2012 for blowing the whistle on attempts by traders to influence his research reports.

Chairman Stephen Sanger could step down ahead of the embattled bank's next annual meeting, according to a news report, clearing the way for the elevation of Duke, the current vice chairman and a former Fed governor and banking executive.

Stilwell Group, an activist investor, is alleging that HopFed chief John Peck bought two properties from the then-chairman of the Kentucky company's compensation committee and that the deals were a conflict of interest.